{
  "ptid_time": "032_S_4429_2013-02-07",
  "img_path": "/data/qiuhui/data/adni/images/032_S_4429/2013-02-07/t1.nii.gz",
  "img_finding": "Image findings: ventricular volume measures 43,276 mm³, 12.4% above the reference mean. With a Z-score of 0.30 (61.6th percentile), this represents normal volume ; hippocampal volume measures 7,635 mm³, 1.0% above the reference mean. With a Z-score of 0.10 (53.9th percentile), this represents normal volume ; whole brain volume measures 1,110,230 mm³, 2.9% above the reference mean. With a Z-score of 0.37 (64.5th percentile), this represents normal volume ; entorhinal cortex volume measures 4,195 mm³, 2.3% above the reference mean. With a Z-score of 0.16 (56.2th percentile), this represents normal volume ; fusiform gyrus volume measures 20,956 mm³, 11.2% above the reference mean. With a Z-score of 0.96 (83.1th percentile), this represents normal volume ; middle temporal gyrus volume measures 22,972 mm³, 7.7% above the reference mean. With a Z-score of 0.69 (75.4th percentile), this represents normal volume . ",
  "text_data": "Age is 78.0 years. Gender is Male. Education: 14 years. MMSE: 29.0. MoCA: 24.0. Logical Memory: 18.0. APOEε4 alleles: 0.0. ",
  "true_diagnosis": "Diagnosis: CN.",
  "gpt_diagnosis": "**Reasoning:** All brain volume measures (ventricular, hippocampal, whole brain, entorhinal cortex, fusiform gyrus, and middle temporal gyrus) are within normal ranges, with Z-scores and percentiles indicating no significant atrophy. Cognitive screening scores (MMSE 29, MoCA 24) are within normal limits for age, and the absence of APOE4 further reduces Alzheimer's risk.  \n**Diagnosis:** CN (Cognitively Normal)  \n**Confidence:** High",
  "timestamp": "2025-07-26T05:05:19.039967"
}